Fireproof window.



Patented Sept. I9, |899. vM. H. CRITTENDEN.

FIREPBOUF WINDOW. v

(Application led Feb. 4, 1899.)

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No. 633,!20. Patented Sept) I9, |899. M. H. CRITTENDEN. FIREPRooF wmuow.

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UNITED STATES 'y PATENT OEETCE.

.MASON H. ORITTENDEN, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE ORITTENDEN ROOFING AND MANUFACTURING COMPANY, OF

SAME PLACE.

FIREPROOF WINDOW.

SPECIFICATION forming part of Letters Patent No. 633,120, dated September 19,1899.

Application filed February 4,1899. Serial No. 704.456. (No modelJ To a/ZZ whom it may concern:

Beit known that 1, MASON H. GEITTENDEN, a citizen of the United States, residing at Minneapolis, in theV county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Fireproof W'indows; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to reproof windows, and has for its object to improve the same in the several particulars hereinafter noted.

The invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claims.

The invention in its preferred form is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Figure 1 is au elevation, looking at the inner side of the window, some parts being broken away. Fig. 2 is a transverse vertical section taken. onthe line :c2 x2 of Fig. 1.` Fig. 3 is a horizontal section taken on the irregular-line x3 m3 of Fig. 1; and Figs. 4 and 5 are detailed views,in vertical section, taken through the upper portion of the lower sash approximately on the line 004 a5 of Fig. 1, said Fig. 5 showing the so-called plug-strip removed from Workin g position.

The window-frame is formed of sheet metal stamped or bent to the proper form and, as shown, comprises side pieces 1, top piece 2, and bottom or sill 3. The side pieces 1 are stamped or pressed inward, as shown at 4, to form the side members of the parting-strips, and the top piece 2 is likewise pressed or stamped inward, as shown at 5, in line with the parting-strips l to form the upper and transverse member of the parting-strips. The sill 3 is formed at its inner side with a raised portion 6, with which the lower end of the lower sash overlaps when closed.

The outer edge of the channel formed by the sides of the side strips 1 may be closed by strips or plates 7, riveted or otherwise secured to the said side strips 1. The weights S, cords 9, and guide-sheaves 10 work within the vertical passages formed between the sides of the side strips 1, and the sheave brackets or supports 11 are rigidly secured in proper position to the said strips 1. The weights S may be placed in working position and removed through passages 12 in the inner faces of the side pieces l. These openings 12 are normally closed by the slides or slot-@losers 13, that work in suitable guides 14, formed by bending inward portions of the metal which were removed to form the slots 12.

The inner and the outer or, in other words, the lower and upper sash are indicated, respectively, bythe numerals 15 and 16. These sashes are formed of sheet metal bent to form hollow rectangular rims, and they are provided at their inner edges with channels or seats 17, in which the window-panes 18 are seated. Each sash is formed lin its upper transverse portion with a long slot or passage 19, which extends from one side to the other of the rectangular seat 17 and through which the pane may be inserted into working position and removed therefrom. After the panes have been placed in working position the slots 19 are closed by so-called plug-strips, preferably formed by bending sheet metal to form a hollow rectangular strip having overlapped lower ends. This so-called plugstrip is best illustrated in Fig. 5, wherein it is shown as removed from working position, and by reference to which it will be seen that the overlapped lower edges of the said strip normally tend to spring apart. In virtue of this spring action the strip is frictionally held in working position when forced into the corresponding slot 19.

Extending parallel to the parting-strips L and 5, respectively,and spaced outward therefrom to give the proper clearance for the outer or upper sash 16 are removable strips 21 and 22, which constitute the outer Window-stops and coperate with the said parting-strips to form guides for the said outer sash. Again, extending parallel to the said parting-strips L and 5, respectively, and spaced inward therefrom to give the properclearance for the inner or lower sash 15 are removable stopstrips 23 and 24, which coperate with the IOO said partingstri ps to form guides for the said lower sash.

The stop-strips 21, 22, 23, and 24 are formed from sheet metal bent to form hollow bodies, and they are removably secured to the frame 1, as shown, by means of short-nutted bolts 25. lVith this construction it is not necessary to remove the parting-strips in order to remove the sash, and hence itis that the said parting-strips may be integrally formed with or stamped from the body of the windowframe.

The lower transverse portion of the upper sash 1G is provided with an inwardly-projecting ledge or flange 26, and the upper transverse portion ot'. the lower sash lis provided with an outwardly-projecting ledge or flange 27, which when the window is closed overlies the said ledge or ange 2G, and thus forms a close joint therewith.

The upper ends of the cords 9 are, as is ordinary, secu red to the sashes.

28 indicates an ordinary window catch or lock which is shown as secured to the upper portion of the lower sash, and 29 indicates an ordinary finger-piece which is secured to the lower portion of said lower sash.

rllhe panes are preferably of what is known as wireglassi. e., glass having wiremesh running through its body and embedded within the same--but of course other glass may be substituted.

As is obvious,the entire device being formed of metal it is absolutely reproof. At the same time it is comparatively light, the parts of the same being formed of hollow sections. The joints between the parts of the frame and between the parts of the sash are preferably riveted, so that they are rendered rigid and will not be affected by heat.

The manner of securing the frame in working position in the window-openin g of abuilding is of course well understood by all persons familiar with this class of work, and hence for the purposes of this case need not be considered.

It will of course be understood that I do not limit myself to the specific details of construction above set forth; but on the contrary that my invention is capable of a considerable range of modification as to these details.

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

1. A ireproof window-casing comprising shell-like end and side sections, said side sections having the entrance-passages 12 and integrallyformed guide-flanges 14, and the slides or slot-closers 18 mounted in the said guide-flanges 14, substantially as and for the purposes set forth.

2. The combination with a metallic windowsash formed in one edge with a slot or passage through which the window-pane may be inserted into working position, of a metallic plug-strip removably seated in said slot orI passage, to normally close the same, substantially as described.

3. The combination with a Window-sash formed hollow from sheet metal and provided with the interior marginal channel or seat 17 and transversely-extended passage 19, of the plug-strip 2O having the spring sides for frictionally holding the same within said passage 19, substantially as described.

In testimony whereof I ax my signature in presence of two witnesses.

MASON H. CRITTENDEN.

fitnessesz M. M. MoGRoRY, FRANK D. MERCHANT. 

